jackson



W. 11. JACKSON.

T-hrashin'g Machine.

No. 111,848. Patented 96114111871.

N. PETERS. FHOT diluted straw pa e can.

WILLIAM N. JAcKseN. or MUNc In, Asslcuon r0 HIMSELF AND BENJAMIN r. JACKSON. or ANDERSON, INDlANA.

Letters Patent No. 111,848., dated February 14,1871.

iMP'RovsMENr m TH R ASHING-MA CHlNES.

To allwlwm it may concern: Be it known that LVVILLIADLN. J iicxsox, ofMunc ie, in the'county of Delaware and State of Indiana, haveiinvented certain Improvements in Thrashing- Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the annexed drawing making part this specification, in which Figure 1 is a side elevation of a thrashing-machine embodying my improvements. Figure 2is a plan view, with part of the thrashingcylinder and upper feed-roller broken away to show the construction of the vibrating concave.

Figurc 31s a side elevation of a detached portioi of the machine, showing the side opposite to that illustrated in fig. 1.

Figure 4 is a front view of the vibrating concave. Figure 5 is a vertical transverse section of the -'tl'n'ashing-cylinder and concave. I Figure 6 is a vertical section of the concave. .Figure 7 is a transverse section'of one of the feed rollers. v

The sameletters are used in all the figures in the designation of identical parts.

This invention relates to a thrashing-machine more especially designed for thrashing flax, but applicable also for thrashing other seed and grain.

My improvement consists vFirst, in the construction and arrangement of the concave, which'is formed upon its upper surface with one wide central groove and a number of diagonal grooves and ribs upon each side of the central groove, the diagonal grooves and ribs on one side running at anangle to those on the other side, and'has a reciprocating motion lengthwise of the axis of the thrashingcylinder, to obtain a rubbing action upon the material passing between them.

Secondly, in the construction of the thrashing-cylf grooves 'b and elevations 1), running around it at right angles to its axis; and notches b are out in the elevations b lengthwise, at certain intervals, to feed the material forward as it is being thrashed between the concave and the cylinder? he concave O is somewhat shorter than the'oyli-m The Schedulereferred to in these Letters Patent and making part of the same.

der, and has at each end two guidc 'ods, cc, by which it is supported in hearings in the inclined bars C,

which, in turn, are seated upon springs c c, attached to the frame-work in the manner shown.

' The springs bearing against the under side of the supporting-bars G of the concave exert a constant upward pressure upon the latter, and thus aidmaterially in thexthrashing of ,thc flax, while they, at the same time, will yield sufliciently to permit any hard substances to pass between the cylinder and concave without damage-to any part of the machine.

In the nppersurface of theconcaveacentral groove, 0 of considerable width comparatively, is formed, and on each side of this central groove is a number of diagonal. grooves, 0 and ribs cL;

The diagonal grooves and ribs on one side of the central groove run at an angle to those on the other side, and the two sets converge toward the lower or discharging side of the concave, to direct the seed which enters the diagonal grooves downward into the central groove, from which it falls upon the incline O and finally upon the. carrier-apron.

The lower portion of the concave in the diagonal grooves and centralgroove' is perforated, so that the seed can fall through upon the incline G belowit, and

avoid any choking at the discharging side of thecon Cit-V0.

Upon reference to fig}; it will be seen that the space between the bars O is longer than the concave,

to permit of a reciprocating movement of the latter in .the direction of the length of the cylinder.- By thus giving the corrugated concave a reciprocating motion under the corrugated revolving cylinder, a rubbing action upon the material passing between them is obtained, whereby the seed is thrashed out more thoroughly than can possibly be done by. a machine in which a stationary concave is employed. The reciprocating motion maybe imparted to the concavein any preferred manner.

As illustrated in the drawing, it receives this mo- 'tion from a rock-shaft, D,'arraugecl upon the side of the frame, and provided with a crank at (Z, which is connected by a rod, D, to the under side of the conbodily vertical motion, toaccommodate itself to the amount of flax or grain passing through the pair. They:

may be operated from the driving-pulley of the cylinder, as shown,

The surface of eachroller is formed with alternate annular grooves e and elevations e, and the rollers are soarranged with reference to each other that the ele- "tween the-cylinder and vibratingconcave, the straw V and seed are delivered upon the inclined carrier-apron G, constructed with the ordinary cross-slats.

Above the carrier-apron a whipper, H, is arranged, composed of a horizontal shaft, with several curved flexible teeth or arms. y

The shaft is oscillated by the crank of the cylindershaft through a pitman, causingthe arms to'whip the straw passing under it and cause the seed to fall upon the apron. v The straw is discharged .from the rear end of the machine, while the seed and chaff, &c.,' fall from the apron, to be cleaned and separated: by the vibrating screen I andfan K in the usual manner. I

These parts-form no part of my present invention,

and may, therefo1e, be suiticiently understood, as they are in common use, by referenceto the drawing.

.-What I claim as my invention by Letters Patent, is g 1. The concave G, constructed with aeentral-groove, c, and a set of parallel diagonal grooves, 0 and ribs 0? on each side of the ceutr l' groove, such sets converging toward the discharging side of theconcave. substantially as set forth.

2. In combinatioirwith the thrashing-cylimler of a f thrashing-machine,a concave having a reciprocating motion parallel to the axisof the cylinder, substantially as set'forth. i 3; The combination of the vibrating concaveO, constructed: as described, and the cylinder B, having alternate'anuular groovesb and elevations b, and longitudinal serrations I), substantially asset forth.

"4. The combination of the feed-rollersE and Eland and desire' to secure W itnesses':

D. P. HOLLOWAY, B. Enw. J. Ems.

thrashirig-cylinder B, when severally constructed, with bf and chlandlongitudinal serrations b and ct, as 

